Implement FullScreen on all platform (need to be able to reset style on frame%)

[bluerider]

There is no method for resetting the style of a frame% after creation. This would be important for a fullscreen feature. Basically (with hypothetical set-style function) :

(call-with-values (lambda () (get-display-size)) (lambda (width height) (send #a frame# set-style (list 'no-caption)) (send #a frame# resize width height)))

[jkominek]

the core functionality requested here (fullscreen on all platforms) was implemented by #8 and #10. allowing full-on changes of frame% styles was not necessary (and those two commits would've been a mere subset of the work required, i think).

[bluerider]

I haven't been able to test it yet; I'll close when I have.

[samth]

Can this be closed now?

[bluerider]

No not yet. See the following error when running using fullscreen on windows host: https://github.com/bluerider/set-game-multi/issues/2